nimbus-eth1/nimbus/rpc/experimental.nim

108 lines
3.2 KiB
Nim

# Nimbus
# Copyright (c) 2024 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
# * MIT license ([LICENSE-MIT](LICENSE-MIT))
# at your option.
# This file may not be copied, modified, or distributed except according to
# those terms.
{.push raises: [].}
import
std/[typetraits],
json_rpc/rpcserver,
web3/conversions,
eth/p2p,
stint,
../core/executor/process_block,
../[transaction, constants],
../beacon/web3_eth_conv,
../stateless/multi_keys,
../evm/[state, types],
../common/common,
../utils/utils,
../db/ledger,
./rpc_types,
./rpc_utils,
./filters,
./p2p
type
BlockHeader = eth_types.BlockHeader
proc getMultiKeys*(
com: CommonRef,
blockHeader: BlockHeader,
statePostExecution: bool): MultiKeysRef
{.raises: [RlpError, BlockNotFound, ValueError].} =
let
chainDB = com.db
blk = chainDB.getEthBlock(blockHeader.number)
# Initializing the VM will throw a Defect if the state doesn't exist.
# Once we enable pruning we will need to check if the block state has been pruned
# before trying to initialize the VM as we do here.
vmState = BaseVMState.new(blk.header, com).valueOr:
raise newException(ValueError, "Cannot create vm state")
vmState.collectWitnessData = true # Enable saving witness data
vmState.com.hardForkTransition(blockHeader)
let dbTx = vmState.com.db.ctx.newTransaction()
defer: dbTx.dispose()
# Execute the block of transactions and collect the keys of the touched account state
processBlock(vmState, blk).expect("success")
let mkeys = vmState.stateDB.makeMultiKeys()
dbTx.rollback()
mkeys
proc getBlockProofs*(
accDB: LedgerRef,
mkeys: MultiKeysRef): seq[ProofResponse] =
var blockProofs = newSeq[ProofResponse]()
for keyData in mkeys.keys:
let address = keyData.address
var slots = newSeq[UInt256]()
if not keyData.storageKeys.isNil and accDB.accountExists(address):
for slotData in keyData.storageKeys.keys:
slots.add(fromBytesBE(UInt256, slotData.storageSlot))
blockProofs.add(getProof(accDB, address, slots))
return blockProofs
proc setupExpRpc*(com: CommonRef, server: RpcServer) =
let chainDB = com.db
proc getStateDB(header: BlockHeader): LedgerRef =
## Retrieves the account db from canonical head
# we don't use accounst_cache here because it's only read operations
LedgerRef.init(chainDB, header.stateRoot)
server.rpc("exp_getProofsByBlockNumber") do(quantityTag: BlockTag, statePostExecution: bool) -> seq[ProofResponse]:
## Returns the block proofs for a block by block number or tag.
##
## quantityTag: integer of a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
## statePostExecution: bool which indicates whether to return the proofs based on the state before or after executing the block.
## Returns seq[ProofResponse]
let
blockHeader = chainDB.headerFromTag(quantityTag)
mkeys = getMultiKeys(com, blockHeader, statePostExecution)
let accDB = if statePostExecution:
getStateDB(blockHeader)
else:
getStateDB(chainDB.getBlockHeader(blockHeader.parentHash))
return getBlockProofs(accDB, mkeys)